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Book/Report | FZJ-2018-02297 |
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1983
Kernforschungsanlage Jülich, Verlag
Jülich
Please use a persistent id in citations: http://hdl.handle.net/2128/17997
Report No.: Juel-1874
Abstract: In this review an attempt was made to describe the various physical models and theoretical approaches of collisional mixing in a unified notation based on standard theory of atomic collisions in amorphous solids. This allowes direct comparison of the respective underlying assumptions, the main regimes of validity, and an assesment of their relative accuracies. Owing to the variety of these models this unified description requires, however, a bulk of mathematical relations and expressions as well as symbols for physical and auxiliaryquantities. Hence, in order to still serve as a readable review, this article is split into a more phenomenological review of recoil mixing, with a minimum of mathematics but containing all conlcusions from the second part, which is the presentation of existing models in a unified scheme. This part (Chap. 3 and 4), in turn, bases on the first one (Chap. 2) and is linked to it by multiple crossreferences. In addition, an introductory chapter intends to shed light into the jungle of terms and definitions currently in use, while a list of symbols refers to those quantities used throughout the article. Particular emphasis was layed on in-depth concentration profiling by putteretching. This differs from the majority of recent work on ion-beam mixing in two respects : it is a low-energy (1-20keV) phenomenon, and it requires additional detailed knowledge on the transformation of internal concentration distributions into external (sputter-) profiles. Furthermore, the importance of determining the entire distribution functions instead of particular distribution parameters is stressed. Finally, the complications due to accumulation of ("reactive") projectiles in the target is addressed.
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